CPU Cooler be quiet! Pure Rock 3 LX CPU Cooler - BK040

be quiet! Pure Rock 3 LX is an air CPU cooler of mid-range, aimed at stable and quiet cooling of modern gaming and work configurations. It is compatible with a wide range of sockets such as AM4, AM5, LGA 1700, and LGA 1851, so you can plan it for future upgrades. The combination of a 120 mm fan, up to 2000 RPM, and decent static pressure is a good foundation for cooling modern multi-core CPUs. The added 5V ARGB connector also gives you visual control over the build without sacrificing functionality.

What you get

With a fan size of 120 x 120 x 25 mm and a range from 300 to 2000 RPM, you can adjust the behavior from almost silent idle to aggressive cooling under serious load. The airflow of 61.8 CFM and static pressure of 2.51 mmH2O mean that the fan not only blows strongly but can effectively push air through the dense radiator – important during prolonged gaming or rendering. The noise level of up to 31.2 dBA is perfectly tolerable for daily work and gaming, especially if you set the fan curve in BIOS according to your preferences. Through the 4-pin PWM connector, your motherboard can precisely control the speeds according to the CPU temperature, and the 5V ARGB lighting connects with other components for synchronized visual style.

• Air cooling with a single fan, providing a balance between efficiency, noise, and price for mass gaming and work systems.
• Wide compatibility with CPU sockets such as AM4, AM5, LGA 1200, LGA 1700, and LGA 1851, so you can use it for future platform upgrades.
• Fan size 120 x 120 x 25 mm, which is a standard format for easy replacement and predictable behavior in most cases.
• Speed range from 300–2000 RPM, allowing for almost silent operation under low load and aggressive cooling under heavy tasks.
• Airflow of 61.8 CFM, sufficient to quickly expel heat from the radiator and keep temperatures under control during long sessions.
• Static pressure of 2.51 mmH2O, which helps air pass effectively through the fins even in more confined spaces.
• Maximum noise level of 31.2 dBA, suitable for a quiet build, especially in combination with well-tuned fan profiles.
• 4-pin PWM + 5V ARGB connectors for precise speed control and synchronizable lighting with other components.

Who it is suitable for

Pure Rock 3 LX is suitable if you are building a mid-range gaming system or work machine and want something better than a stock cooler without entering the territory of expensive AIOs. It fits well with configurations for 1080p and 1440p gaming, streaming, and productivity, where the CPU is loaded steadily but is not a brutal thermal beast. If you are aiming for extreme overclocking or the quietest possible high-end build, you will probably want a larger cooler or liquid cooling.

The combination of wide compatibility, decent airflow, and controllable noise makes be quiet! Pure Rock 3 LX a very logical choice when you are looking for a practical and tidy cooling solution for a modern CPU with a bit of ARGB color.